Ostero Built 1896 Edwards Bros North Shields for the White Star Steam Fishing Co. Ltd Grimsby 02/1909 Sold to H. Smethurst 03/1915 Sold to G. Smith 09/1922 Bought by W. Would 12/1924 Bought by W. Garratt & F. B. Jeffs 08/1931 Sold to T. Baskcomb
Barnett built 26/07/1937 by Cook Welton & Gemmell for Crampin Steam Fishing Co 11/1939 Requisitioned and converted into an A/S and renamed Blackfly Joined the 12th A/S Strike force and worked the Northern waters based at Grimsby and Chatham 1940 took part in the Norwegian Campaign 1942 Employed in the Artic Convoys 1944 Transferred to Ministry of Fisheries 15/05/1945 In Convoy with the Gunboat Kilmarnock they sank U731 off Tangier 1946 Sold back to Crampins and reverted to original name but registered as GY 200 03/1946 sold to Hull Ice Co 11/1946 sold back to Crampins